Korean Journal of Medicinal Crop Science (한국약용작물학회지)

The Korean Society of Medicinal Crop Science (한국약용작물학회)
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Identification of Fungal Pathogen Causing Seedling Rot of Lithospermum erythrorhizon and Study on the Optimum Growing Temperature for Decreasing of the Seedling Rot

지치 육묘시 발생하는 유묘썩음증상 원인균 분리·동정 및 경감 육묘환경에 관한 연구

  • An, Tae Jin (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Shin, Kyu Seop (College of Agricultural and Life Sciences, Chungnam National University) ;
  • Ahn, Young Sup (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Hur, Mok (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Park, Chung Berm (Department of Herbal Crop Research, NIHHS, RDA)
  • 안태진 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 신규섭 (충남대학교 농업생명과학대학 농생물학과) ;
  • 안영섭 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 허목 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 박충범 (농촌진흥청 국립원예특작과학원 인삼특작부)
  • Received : 2012.11.16
  • Accepted : 2013.01.18
  • Published : 2013.02.28
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Abstract

This study was conducted to isolate and identify the fungal pathogen causing seedling rot of Lithospermum erythrorhizon Siebold & Zuccarini, and to know the optimum growing temperature for decreasing seedling rot of Lithospermum erythrorhizon. On the basis of morphological characteristics, EF-1a sequence analysis, and pathogenecity to host plant, the fungi isolated from seedling rot and seeds of Lithospermum erythrorhizon were identified as Fusarium fujikuroi, indicating that disease causing fungus is seed-borne pathogen. Optimum temperature for germination of seeds of Lithospermum erythrorhizon was $15{\sim}20^{\circ}C$, but pathogenicity of Fusarium fujikuroi was shown more readily at $25{\sim}30^{\circ}C$. These results suggested that seedling culture of Lithospermum erythrorhizon between $15^{\circ}C$ and $20^{\circ}C$ might reduce seedling rot of Lithospermum erythrorhizon caused by seed-borne pathogen Fusarium fujikuroi.

Keywords

References

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